# -*- coding:utf-8 -*-
# 2023/11/21 16:25
# 资源类


from flask_restful import Resource
from flask_restful.reqparse import RequestParser
from comment.utils import parser

from comment.modules.user import User
from flask import current_app, request
from comment.utils.aliyun_sms_send import send_sms
import random
import json
from comment.utils.limiter import limiter as lmt
from Shopping.resources.user import constants
from flask_limiter.util import get_remote_address
from comment.utils.shopping_redis import redis_client
from comment.modules import db


# 我们定义测试的资源类
class Shopping_User(Resource):
    def get(self):
        current_app.logger.info('测试')
        # 测试可能会用到User模型类
        return {"hello": "测试"}


class User_SMS(Resource):
    '''
    发送验证码的短信
    '''

    error_message = 'Tom many requests.'
    decorators = [
        #   三个参数:参数1:限流的速率,参数2:key_func,参数3:如果超出限制之后的提示信息
        lmt.limit(constants.LIMIT_SMS_CODE_BY_MOBILE,
                  key_func=lambda: request.args['phone'],
                  error_message=error_message),
        lmt.limit(constants.LIMIT_SMS_CODE_BY_IP,
                  key_func=get_remote_address,
                  error_message=error_message)
    ]

    def get(self):
        phone = request.args.get('phone').strip()
        code = random.randint(1000, 9999)
        result = send_sms(phone, str(code))  # 返回的是json的字符串
        result = json.loads(result)  # 把json变成字典
        # result 往里面添加手机号码
        result['phone'] = phone

        # 短信验证码发送成功之后,还需要把验证码存放到redis数据库中,以便于下次验证,验证码的时效为5分钟
        redis_client.setex('shopping:code:{}'.format(phone), constants.SMS_CODE_EXPIRES,
                           code)  # 参数1:key,参数2:时效,参数3:验证码的值

        return result


class AuthorizationCodeResource(Resource):
    """
    提交手机号和验证码，开始验证
    """

    def post(self):
        rp = RequestParser()
        rp.add_argument('phone', type=parser.mobile, required=True)
        rp.add_argument('code', type=parser.regex(r'^\d{4}$'), required=True)
        args = rp.parse_args()
        phone = args.phone
        code = args.code

        # 从redis数据库中得到之前保存的验证码
        key = 'shopping:code:{}'.format(phone)
        try:
            real_code = redis_client.get(key)  # 从redis中返回的是字节数据
        except ConnectionError as e:
            current_app.logger.error(e)
            return {'message': 'redis db connect error.'}, 400
        # 开始校验
        if not real_code or real_code.decode() != code:
            return {'message': 'Invalid code.'}, 400

        return {'phone': phone, 'msg': 'code success.'}


class RegisterUserResource(Resource):
    '''
    填写账号信息,完成用户的注册
    '''

    def post(self):
        rp = RequestParser()
        rp.add_argument('phone', type=parser.mobile, required=True)
        rp.add_argument('username', required=True)
        rp.add_argument('password', required=True)
        rp.add_argument('email', type=parser.email, required=True)
        args = rp.parse_args()
        username = args.username
        password = args.password
        phone = args.phone
        email = args.email

        # 验证用户名是否唯一:先从MySQL数据库中查找根据当前用户名查询
        u = User.query.filter(User.username == username).first()
        if u:  # 用户名已经存在
            current_app.logger.info('{}:用户名已经存在,请换一个'.format(username))
            return {'msg': 'The user name already exists. Please change it'}, 400

        # 把用户信息保存到数据库中
        u = User(username=username, pwd=password, email=email, status=0)
        db.session.add(u)
        db.session.commit()
        return {'msg':'ok'}
